<?php
/**
 * Smarty Internal Plugin Compile Modifier
 * Compiles code for modifier execution
 *
 * @package    Smarty
 * @subpackage Compiler
 * @author     Uwe Tews
 */

/**
 * Smarty Internal Plugin Compile Modifier Class
 *
 * @package    Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Private_Modifier extends Smarty_Internal_CompileBase
{
    /**
     * Compiles code for modifier execution
     *
     * @param array                                 $args      array with attributes from parser
     * @param \Smarty_Internal_TemplateCompilerBase $compiler  compiler object
     * @param array                                 $parameter array with compilation parameter
     *
     * @return string compiled code
     * @throws \SmartyCompilerException
     * @throws \SmartyException
     */
    public function compile($args, Smarty_Internal_TemplateCompilerBase $compiler, $parameter)
    {
        // check and get attributes
        $_attr = $this->getAttributes($compiler, $args);
        $output = $parameter[ 'value' ];
        // loop over list of modifiers
        foreach ($parameter[ 'modifierlist' ] as $single_modifier) {
            /* @var string $modifier */
            $modifier = $single_modifier[ 0 ];
            $single_modifier[ 0 ] = $output;
            $params = implode(',', $single_modifier);
            // check if we know already the type of modifier
            if (isset($compiler->known_modifier_type[ $modifier ])) {
                $modifier_types = array($compiler->known_modifier_type[ $modifier ]);
            } else {
                $modifier_types = array(1, 2, 3, 4, 5, 6);
            }
            foreach ($modifier_types as $type) {
                switch ($type) {
                case 1:
                    // registered modifier
                    if (isset($compiler->smarty->registered_plugins[ Smarty::PLUGIN_MODIFIER ][ $modifier ])) {
                        if (is_callable($compiler->smarty->registered_plugins[ Smarty::PLUGIN_MODIFIER ][ $modifier ][ 0 ])) {
                            $output =
                                sprintf(
                                    'call_user_func_array($_smarty_tpl->registered_plugins[ \'%s\' ][ %s ][ 0 ], array( %s ))',
                                    Smarty::PLUGIN_MODIFIER,
                                    var_export($modifier, true),
                                    $params
                                );
                            $compiler->known_modifier_type[ $modifier ] = $type;
                            break 2;
                        }
                    }
                    break;
                case 2:
                    // registered modifier compiler
                    if (isset($compiler->smarty->registered_plugins[ Smarty::PLUGIN_MODIFIERCOMPILER ][ $modifier ][ 0 ])) {
                        $output =
                            call_user_func(
                                $compiler->smarty->registered_plugins[ Smarty::PLUGIN_MODIFIERCOMPILER ][ $modifier ][ 0 ],
                                $single_modifier,
                                $compiler->smarty
                            );
                        $compiler->known_modifier_type[ $modifier ] = $type;
                        break 2;
                    }
                    break;
                case 3:
                    // modifiercompiler plugin
                    if ($compiler->smarty->loadPlugin('smarty_modifiercompiler_' . $modifier)) {
                        // check if modifier allowed
                        if (!is_object($compiler->smarty->security_policy)
                            || $compiler->smarty->security_policy->isTrustedModifier($modifier, $compiler)
                        ) {
                            $plugin = 'smarty_modifiercompiler_' . $modifier;
                            $output = $plugin($single_modifier, $compiler);
                        }
                        $compiler->known_modifier_type[ $modifier ] = $type;
                        break 2;
                    }
                    break;
                case 4:
                    // modifier plugin
                    if ($function = $compiler->getPlugin($modifier, Smarty::PLUGIN_MODIFIER)) {
                        // check if modifier allowed
                        if (!is_object($compiler->smarty->security_policy)
                            || $compiler->smarty->security_policy->isTrustedModifier($modifier, $compiler)
                        ) {
                            $output = "{$function}({$params})";
                        }
                        $compiler->known_modifier_type[ $modifier ] = $type;
                        break 2;
                    }
                    break;
                case 5:
                    // PHP function
                    if (is_callable($modifier)) {
                        // check if modifier allowed
                        if (!is_object($compiler->smarty->security_policy)
                            || $compiler->smarty->security_policy->isTrustedPhpModifier($modifier, $compiler)
                        ) {
                            $output = "{$modifier}({$params})";
                        }
                        $compiler->known_modifier_type[ $modifier ] = $type;
                        break 2;
                    }
                    break;
                case 6:
                    // default plugin handler
                    if (isset($compiler->default_handler_plugins[ Smarty::PLUGIN_MODIFIER ][ $modifier ])
                        || (is_callable($compiler->smarty->default_plugin_handler_func)
                        && $compiler->getPluginFromDefaultHandler($modifier, Smarty::PLUGIN_MODIFIER))
                    ) {
                        $function = $compiler->default_handler_plugins[ Smarty::PLUGIN_MODIFIER ][ $modifier ][ 0 ];
                        // check if modifier allowed
                        if (!is_object($compiler->smarty->security_policy)
                            || $compiler->smarty->security_policy->isTrustedModifier($modifier, $compiler)
                        ) {
                            if (!is_array($function)) {
                                $output = "{$function}({$params})";
                            } else {
                                if (is_object($function[ 0 ])) {
                                    $output = $function[ 0 ] . '->' . $function[ 1 ] . '(' . $params . ')';
                                } else {
                                    $output = $function[ 0 ] . '::' . $function[ 1 ] . '(' . $params . ')';
                                }
                            }
                        }
                        if (isset($compiler->required_plugins[ 'nocache' ][ $modifier ][ Smarty::PLUGIN_MODIFIER ][ 'file' ])
                            
                            || isset($compiler->required_plugins[ 'compiled' ][ $modifier ][ Smarty::PLUGIN_MODIFIER ][ 'file' ])
                        ) {
                            // was a plugin
                            $compiler->known_modifier_type[ $modifier ] = 4;
                        } else {
                            $compiler->known_modifier_type[ $modifier ] = $type;
                        }
                        break 2;
                    }
                }
            }
            if (!isset($compiler->known_modifier_type[ $modifier ])) {
                $compiler->trigger_template_error("unknown modifier '{$modifier}'", null, true);
            }
        }
        return $output;
    }
}
